How to fix the Oracle error PLS-00457: expressions have to be of SQL types?

In this post, you’ll learn more about the Oracle ErrorPLS-00457: expressions have to be of SQL types with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PLS-00457: expressions have to be of SQL types

Reason for the Error PLS-00457: expressions have to be of SQL types

an expression of wrong type is in USING or dynamic RETURNING clause. In USING or dynamic RETURNING clause, an expression cannot be of non-SQL types such as BOOLEAN, INDEX TABLE, and record.

How to fix the Error PLS-00457: expressions have to be of SQL types ?

You can fix this error in Oracle by following the below steps

change the expression type to a SQL type.